Laser printers emit the finest dust particles. In some office spaces, the exposure to fine dust is as high as in the vicinity of a motorway with average traffic. Protect yourself with the tesa® Clean Air fine dust filter! Tesa Clean Air® provides a better indoor climate and effectively protects against fine dust from laser printers. Find out how... the printer filter does it! tesa® Clean Air filters even ultra-fine dust particles with its three-layer high-performance fleece. In this way, the fine dust filter prevents them from entering the lungs and causing damage to health. Each of the three layers takes on an important task: - The first layer filters larger dust particles. - The second layer binds smaller particles thanks to electrostatically charged microfibres. - The third layer is extremely fine-pored and filters even the smallest fine dust particles.